Boat Batteries & Charging Them

Batteries & Charging Them

Boat Batteries
& Charging Them

Having enough power on a boat is a combination of battery choice, monitoring, maintenance and charging.

Learn how not to have any amp-ogres aboard!

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Charging Boat Batteries With a Portable Generator

Published on March 19, 2026; last updated on March 22, 2026 by Carolyn Shearlock

Running low on power at anchor? Here’s how to charge your boat batteries with a portable generator — fast and safely.

Troubleshooting Boat Refrigeration – Is it Your Batteries?

Published on April 10, 2025; last updated on January 2, 2026 by Carolyn Shearlock

When troubleshooting boat refrigerations you might want to look at your batteries first. Tips for when your fridge runs but the beer is warm.

Inverters on a Boat: What They Do and What You Need to Know

Published on October 3, 2024; last updated on March 25, 2026 by Carolyn Shearlock

An inverter turns your boat’s 12V battery power into regular household current. Here’s what every boater needs to know.

🎧Deciding on Lithiums

Published on July 21, 2020; last updated on May 17, 2023 by Nica Waters

A brief overview of boat energy systems and how we settled on lithium batteries.

Boat Battery Types 101

Published on January 20, 2020; last updated on January 2, 2026 by Cory Nickerson

Learn about the different types of boat batteries and figure out which ones are best for you!

PowerMax: Customer Service Above and Beyond

Published on April 24, 2019; last updated on January 29, 2023 by Carolyn Shearlock

PowerMax chargers are solid chargers at an affordable “non-marine\” price. When I recently had a problem with ours, their customer service blew me away!

Lithium Boat Batteries

Published on January 16, 2019; last updated on January 4, 2026 by Carolyn Shearlock

Lithium batteries are a big upgrade on any boat. Are they worth the price? What advantages do they offer? Review and comparison to lead-acid batteries.

More From Your Solar Panels

Published on March 2, 2016; last updated on March 20, 2023 by Carolyn Shearlock

We live over 90% on solar power and did on our previous boat, too. It’s fairly easy on nice days in the middle of summer, but we do okay even on partially cloudy short winter days with just a little extra effort.

Upgrading Lead-Acid Batteries

Published on January 25, 2016; last updated on January 2, 2026 by Carolyn Shearlock

How to get the most amp-hours in a bank of lead-acid batteries for a boat or RV. Two myths busted and other important information.

How Much Solar Power Do You Need?

Published on October 21, 2015; last updated on January 3, 2026 by Carolyn Shearlock

Why it’s impossible for a solar power estimator to tell you precisely how much solar power you need. 14 things that may be different in the real world.